Activation of stratospheric chlorine by reactions in liquid sulphuric acid
Activation of stratospheric chlorine by reactions in liquid sulphuric acid
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通过液体硫酸中的反应活化平流层氯
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
P. Crutzen
中科院分区：
文献类型：
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作者：
R. A. Cox;A. MacKenzie;R. Müller;T. Peter;P. Crutzen
本文讨论了H_2SO_4气溶胶粒子通过HOCl与HCl反应释放活性氯的过程。基于目前的实验室数据，该过程显示出在低于约195 K的温度下具有可观的速率，当气溶胶颗粒变得足够稀以允许HCl溶解和快速ClONO2水解时。如在北极平流层多次观察到的那样，在火山作用增强的气溶胶保持液态直到冰点（190 K）的情况下，十亿分之一的Cl2浓度的演变可能是重要的。
Active chlorine release on H2SO4 aerosol particles via the reaction of HOCl and HCl in solution is discussed. Based on current laboratory data, the process is shown to have an appreciable rate at temperatures below about 195 K, when the aerosol particles become sufficiently dilute to allow both HCl dissolution and fast ClONO2 hydrolysis. Evolution of part-per-billion concentrations of Cl2 could be significant in cases in which volcanically enhanced aerosol remains liquid until the frost point (≈ 190 K) as observed on several occasions in the Arctic stratosphere.